Scientific experiments must be able to be repeated by multiple scientists to verify the results that are obtained. Which of the following is an example of a scientific question that could be used to create an easily reproducible experiment?

a. Why do people like to watch television?

b. Does the mass of a rocket affect the distance it can travel?

c. What makes the sky blue?

d. Does sugar or salt have a greater effect on plant growth?

The question is: "Scientific experiments must be able to be repeated by multiple scientists to verify the results that are obtained. Which of the following is an example of a scientific question that could be used to create an easily reproducible experiment?" Let's look at the options: a. Why do people like to watch television? - this is not really reproducible because you would get a different answer depending on what people you ask b. Does the mass of a rocket affect the distance it can travel? - this is very expensive to test, so cannot be easily tested by many people c. What makes the sky blue? - this question is not precise enough to answer! d. Does sugar or salt have a greater effect on plant growth?" - this is the best answer, it's easy to test and it is formulated in a very precise way